Boiler.



No. 736,354. I PATENTED AUG. 18, 1903. W. D. BOYCE.

BOILER.

APPLIUAITION FILED MAR. a. 1902.

no MODEL, 2 SHEETS-SHEET 1.

Rms PETERS c0; momumcu WASHINCTON n c PATENTED AUG. 18, 1903.

W. 11. BOYGB.

BOILER.

, APPLICATION FILED MAR, 3, 1902.7

2 SHEETS-SHEET 2.

NO MODEL.

v UNITED STATES Patented August 18, 1903.

VVILLIAM D. BOYCE, OF ST. LOUIS, MISSOURI.

BOILER.

SPECIFICATION forming part of Letters Patent No. 736,354, dated August18, 1903.

Application filed March 3,1902. Serial No. 96,474. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM D. BoYoE, a citizen of the United States,residing at the city of St. Louis, State of Missouri, have invented acertain new and useful Improvement in Boilers, of which the following isa full, clear, and exact description, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which- Figure 1 is alongitudinalsectional elevation.Fig. 2 is a transverse elevation, partly in section, on the line 2 2 ofFig. 1; and Fig. 3 is a front elevation.

My invention relates to improvements in boilers, and more particularlyto steam-boilers of the tube type, my objects being to provide asettling-chamber for catching and retaining the mud in the water, toprovide for firmly securing the boiler-head in place, and to so arrangethe tubes that theirouter surfaces can be readily cleaned and access canbe conveniently had to the interior of the boiler and the tie-rods whichsecurethe head in place. To these ends and also to improve generallyupon devices of the character indicated my invention consists in thevarious matters hereinafter described and claimed.

Referring now more particularly to the drawings, 1 represents the boilershell or casing; 2, the tubes or fiues thereof 3, the end head, and 4doors opening into the front of the casing. I Depending from the casingand communicatingwith the interior thereof is a settling-cha1nber 5,whose lower end is closed by 'isaT-coupling'i ,by1 neans of whichtheincomingwater is discharged horizontally against the inner wall of thesettling-chamber. Thus the cold water is not discharged against a flueor fines, and the temperature of said flue or fiues thereby reduced, andas water enters the boiler the mud and like matter are caught andretained in the settling-chamber, which can be cleaned by means of theblow-off cook or by removing the head 6.

The tubes 2 are secured in the head 3 in the usual manner, but arearranged in sets, as shown in Fig. 2, there being a passage-way 9between said sets and communicating with the opening into the chamber 5.This passageway is of such size that a man can stand therein, whereby byentering the boiler through the said chamber access can be readily hadto the interior and the tubes can be cleaned, the hereinafter-mentionedtie-rods can be adjusted or repaired, or there can be performed anyother operation requiring the presence of a man in the boiler. each setare arranged in lines with spaces between them, as indicated at 10 inFig. 2, whereby a man standing in the space between the sets of tubescan insert a cleaning instrument between the line of tubes.

Extending vertically in the space between the said sets of tubes andsecured upon the head 3 are angle-irons 11, between which are securedtie-rods 12, whose other ends are fastened to the casing in any suitablemanner. Thus the spacing of the sets of tubes as described not onlypermits ready and convenientaocess to be had to the interior of theboiler, but also afiords space for firmly securing tie-rods to the head3 and makes it possible to easily reach these tie-rods for purposes ofadjustment, repair, &c. The settling-chamber not only acts as such, butalso forms a manhole through which access can be had to the spacebetween the sets of tubes. Furthermore, the tubes support or strengthenthe head in the usual manner, and the said angle-irons not only serve asmembers upon which to secure the tie rods, but also strengthen the headover the space between said tubes.

I am aware that many minor changes in the construction, arrangement, andcombination of the several parts of my device can be made andsubstituted for those herein shown and described without in the leastdeparting from the nature and principle of my invention.

Furthermore, the tubes of y Having thus described my invention, what Iclaim as new, and desire to secure by Letters Patent, is-- 1. In aboiler, a casing, a head, tubes upon said head and arranged in setsspaced apart, angle-irons in the space between said sets of tubes, andtie-rods supported between said angle-irons and secured to said casing;substantially as described.

2. In a boiler, a casin g, a chamber depend ing therefrom andcommunicating therewith,

said chamber forming a manhole, a removable head closing the lower endof said chamber, an inlet-pipe emptying into said chamber, and tubesinsaid casing and arranged in

